Re: [TowerTalk] Bundling of tower coax and control lines

[Jim W7RY <w7ry@centurytel.net>]

Tessco has it by 500 foot spools. It's called split loom tubing or 
convoluted tubing.  A search will turn up Tessco. Huge supplier to the 
wireless industry.
73
Jim W7RY


On 11/16/2013 5:24 AM, Patrick Greenlee wrote:
> Roger, Your UV is not nearly the intensity of the 5000 ft high desert 
> QTH. What works for you will not work with the intense UV of the high 
> desert.
> Ray, I think the dripline is something to consider. I think it should 
> be much more survivable than typical water hoses which the UV eats 
> quickly. I have had HD clear plastic tubing turn to sticky goo in 
> under a year. I have used some 1/2 and 3/4 inch black plastic tubing 
> in drip systems and it lasted with no apparent damage for several 
> years. The black plastic wire covering "tubing" (wire loom) with a 
> slit on one side lasts for several years.  I always found it necessary 
> to put some tape around it every so often or to use a few distributed 
> tie wraps to keep the enclosed wires from popping out when the bundle 
> was flexed. Maybe you could ferret out the mfg and buy it in longer 
> lengths that the shorter ones at the auto parts store.
> Patrick AF5CK
>
> -----Original Message----- From: Roger (K8RI) on TT
> Sent: Saturday, November 16, 2013 2:27 AM
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] Bundling of tower coax and control lines
>
> On 11/16/2013 2:51 AM, Ray Benny wrote:
> > The subject of bundling tower coax with a spiral/twist type material was
> > recently mentioned. I cannot seem to find it.
> >
> > I would like to bundle my coax and other cables, hanging from coax 
> > arms, to
> > protect them from UV rays. My QTH is high desert, almost 5000 ft 
> > elevation
> > and control lines on other towers are starting to be affected. I used 
> > non
> > UV resistant cables that I had on hand at the time,
> My Opinion:
>
> Because of the cost and work involved, I'd choose to just replace the
> cables.
> There are very few coax cables and rotator cables that are very
> sensitive to UV.
> The only brand name coax sensitive to UV "that I know of" are the
> UltraFlex versions of the LMR series.
> I do have "old" rotator cables that the outer jacket is failing after
> nearly 30 years.
>
>
> If the cables have been up long enough to already show substantial
> deterioration, it's time to replace them anyway.
>
> 73
>
> Roger (K8RI)
>
> > Does anyone have leads to locate some of this UV resistant material? 
> > I've
> > seen this type of material for indoor cables, in 6 - 8 ft lengths. I'm
> > hoping someone makes long lengths, 50 ft or so and of different 
> > diameters.
> > Just a thought, has anyone successfully used large diameter black water
> > drip line for this? Seems to cover 2 RG8 size coax cables, a #12/2 
> > copper
> > line and a 3/8" control line would require at least a 1" diameter line.
> >
> > Tnx,
> >
> > Ray, N6VR
> > Chino Valley, AZ
> > _______________________________________________
> >
> >
> >
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